trouble scraping paint off brick HELP!

I am trying to scrape 150 years of paint off brick and it is as hard as concrete in places. A regular scraper only takes the loose stuff off. The rest needs a hammer and chisel and I have about 1300 s/f left to do. I just bought the Spyder reciprocating saw scraper blades THEN read the lousy reviews of the product when I got home. Haven't tried it yet but I'm thinking of returning it before I break it. I can't use a pressure washer or sand blaster because the mortar is too fragile for either. I have never used a heat gun but I doubt it will make a dent on this stuff. The building has been scraped and painted many times before but they never got all the paint off. There are a lot of plateaus of many layers of paint, then areas where the brick is under one or two layers of paint. Any suggestions?Thank you

I am trying to scrape 150 years of paint off brick and it is as hard as concrete in places. A regular scraper only takes the loose stuff off. The rest needs a hammer and chisel and I have about 1300 s/f left to do. I just bought the Spyder reciprocating saw scraper blades THEN read the lousy reviews of the product when I got home. Haven't tried it yet but I'm thinking of returning it before I break it. I can't use a pressure washer or sand blaster because the mortar is too fragile for either. I have never used a heat gun but I doubt it will make a dent on this stuff. The building has been scraped and painted many times before but they never got all the paint off. There are a lot of plateaus of many layers of paint, then areas where the brick is under one or two layers of paint. Any suggestions?Thank you

If you need to remove all of the paint Peel Away smart strip will work, but it will be costly on the whole building and stilll takes some work.

Peel-Away is good, but this may be better suited to the job. Back-To-Nature strippers work overnight. They are non-caustic and environmentally safe. They are owned by Sunnyside Products. Check it out:

Peel away smart strip is also non caustic and environmentally safe. Peel away smart strip pro usually starts to work after about 3 hours of dwelling depending on temps and neither of them need to be neutralized. We stripped a historical brick building last year using peel away smart strip, now we are stripping another historical building using peel away smart strip pro. Either way you go, there is still work involved. Even using chemical strippers.